X-Git-Url: https://mattmccutchen.net/bigint/bigint.git/blobdiff_plain/e257a1b25b880dc6246189e7ede1d0ea3db6337d..be1bdfe2b1863ad12b104fadb6bbbb4524724146:/BigInteger.cc

diff --git a/BigInteger.cc b/BigInteger.cc
index 471d056..f70b021 100644
--- a/BigInteger.cc
+++ b/BigInteger.cc
@@ -1,6 +1,5 @@
 /*
 * Matt McCutchen's Big Integer Library
-* http://mysite.verizon.net/mccutchen/bigint/
 */
 
 #include "BigInteger.hh"
@@ -67,7 +66,7 @@ BigInteger::BigInteger(unsigned long x) {
 		sign = zero; // NumberlikeArray did the rest
 	else {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = positive;
 		len = 1;
 		blk[0] = Blk(x);
@@ -77,13 +76,13 @@ BigInteger::BigInteger(unsigned long x) {
 BigInteger::BigInteger(long x) {
 	if (x > 0) {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = positive;
 		len = 1;
 		blk[0] = Blk(x);
 	} else if (x < 0) {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = negative;
 		len = 1;
 		blk[0] = Blk(-x);
@@ -96,7 +95,7 @@ BigInteger::BigInteger(unsigned int x) {
 		sign = zero;
 	else {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = positive;
 		len = 1;
 		blk[0] = Blk(x);
@@ -106,13 +105,13 @@ BigInteger::BigInteger(unsigned int x) {
 BigInteger::BigInteger(int x) {
 	if (x > 0) {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = positive;
 		len = 1;
 		blk[0] = Blk(x);
 	} else if (x < 0) {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = negative;
 		len = 1;
 		blk[0] = Blk(-x);
@@ -125,7 +124,7 @@ BigInteger::BigInteger(unsigned short x) {
 		sign = zero;
 	else {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = positive;
 		len = 1;
 		blk[0] = Blk(x);
@@ -135,13 +134,13 @@ BigInteger::BigInteger(unsigned short x) {
 BigInteger::BigInteger(short x) {
 	if (x > 0) {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = positive;
 		len = 1;
 		blk[0] = Blk(x);
 	} else if (x < 0) {
 		cap = 1;
-		blk2 = new Blk[1];
+		blk = new Blk[1];
 		sign = negative;
 		len = 1;
 		blk[0] = Blk(-x);
@@ -358,9 +357,11 @@ void BigInteger::subtract(const BigInteger &a, const BigInteger &b) {
 	// If a is zero, copy b and flip its sign.  If b is zero, copy a.
 	if (a.sign == zero) {
 		BigUnsigned::operator =(b);
-		sign = Sign(-sign);
+		// Take the negative of _b_'s, sign, not ours.
+		// Bug pointed out by Sam Larkin on 2005.03.30.
+		sign = Sign(-b.sign);
 	} else if (b.sign == zero)
-    operator =(a);
+		operator =(a);
 	// If their signs differ, take a.sign and add the magnitudes.
 	else if (a.sign != b.sign) {
 		sign = a.sign;